CA2265720A1 - Receiver with improved multipath signal rejection - Google Patents
Receiver with improved multipath signal rejectionInfo
- Publication number
- CA2265720A1 CA2265720A1 CA002265720A CA2265720A CA2265720A1 CA 2265720 A1 CA2265720 A1 CA 2265720A1 CA 002265720 A CA002265720 A CA 002265720A CA 2265720 A CA2265720 A CA 2265720A CA 2265720 A1 CA2265720 A1 CA 2265720A1
- Authority
- CA
- Canada
- Prior art keywords
- discriminator
- signal
- inbound
- prn code
- positioning system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/22—Multipath-related issues
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/29—Acquisition or tracking or demodulation of signals transmitted by the system carrier including Doppler, related
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Noise Elimination (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
A global positioning system receiver includes an inbound signal terminal to receive an inbound global positioning system signal having an inbound PRN code from a global positioning system signal source. A
local PRN code generator is configured to generate a local PRN code. A discriminator is coupled to the inbound signal terminal and to the local PRN code generator and configured to compare the inbound signal and the local PRN code and to generate a discriminator signal containing a positive portion and a negative portion.
A processor (1205) is coupled to the discriminator and configured to receive the discriminator signal to process the discriminator signal to determine a bit code and to determine a distance from the global positioning system signal source based on said bit code. In one embodiment the discriminator includes an acquisition mode configured to acquire the inbound PRN code wherein the discriminator has a first gate width and a tracking mode configured to track the PRN code wherein the discriminator has a second gate width less than the first gate width. Advantages of the invention include improved multipath signal rejection.
local PRN code generator is configured to generate a local PRN code. A discriminator is coupled to the inbound signal terminal and to the local PRN code generator and configured to compare the inbound signal and the local PRN code and to generate a discriminator signal containing a positive portion and a negative portion.
A processor (1205) is coupled to the discriminator and configured to receive the discriminator signal to process the discriminator signal to determine a bit code and to determine a distance from the global positioning system signal source based on said bit code. In one embodiment the discriminator includes an acquisition mode configured to acquire the inbound PRN code wherein the discriminator has a first gate width and a tracking mode configured to track the PRN code wherein the discriminator has a second gate width less than the first gate width. Advantages of the invention include improved multipath signal rejection.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2606396P | 1996-09-13 | 1996-09-13 | |
US60/026,023 | 1996-09-13 | ||
US08/795,608 | 1997-02-05 | ||
US08/795,608 US5808582A (en) | 1996-09-13 | 1997-02-05 | Global positioning system receiver with improved multipath signal rejection |
PCT/US1997/015997 WO1998011451A1 (en) | 1996-09-13 | 1997-09-10 | Receiver with improved multipath signal rejection |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2265720A1 true CA2265720A1 (en) | 1998-03-19 |
CA2265720C CA2265720C (en) | 2005-02-01 |
Family
ID=26700709
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002265720A Expired - Lifetime CA2265720C (en) | 1996-09-13 | 1997-09-10 | Receiver with improved multipath signal rejection |
Country Status (7)
Country | Link |
---|---|
US (2) | US5808582A (en) |
EP (1) | EP0925514B1 (en) |
JP (1) | JP3983812B2 (en) |
AR (1) | AR009778A1 (en) |
BR (1) | BR9712042B1 (en) |
CA (1) | CA2265720C (en) |
WO (1) | WO1998011451A1 (en) |
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US7315569B2 (en) * | 2003-07-11 | 2008-01-01 | Samsung Electronics Co., Ltd. | Method and system for locating a GPS correlated peak signal |
JP4498841B2 (en) * | 2003-07-11 | 2010-07-07 | 三星電子株式会社 | GPS correlation peak signal search method and system therefor. |
JP3806425B2 (en) * | 2003-12-01 | 2006-08-09 | マゼランシステムズジャパン株式会社 | Satellite positioning method and satellite positioning system |
US7876738B2 (en) * | 2004-03-02 | 2011-01-25 | Nokia Corporation | Preventing an incorrect synchronization between a received code-modulated signal and a replica code |
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US8233516B2 (en) * | 2009-06-24 | 2012-07-31 | Qualcomm Incorporated | Wideband correlation mode switching methods and apparatuses |
KR101635787B1 (en) * | 2009-09-28 | 2016-07-04 | 삼성전자주식회사 | Apparatus and method for tracking gps signals in portable terminal |
CN105282059A (en) * | 2014-06-30 | 2016-01-27 | 深圳市中兴微电子技术有限公司 | Multi-path selection method and equipment |
TWI577158B (en) * | 2015-11-05 | 2017-04-01 | 財團法人工業技術研究院 | Apparatus and method of channel estimation |
US10094931B2 (en) * | 2016-02-23 | 2018-10-09 | Samsung Electronics Co., Ltd | Detection of, and processing of signals within a null zone by a global navigation satellite system receiver |
CN109143276B (en) * | 2018-02-24 | 2022-09-30 | 上海华测导航技术股份有限公司 | Design method of combined anti-multipath phase discriminator based on CUSUM algorithm |
JP7289312B2 (en) | 2018-02-26 | 2023-06-09 | スマートスカイ ネットワークス エルエルシー | Optimized location-aided beamforming |
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-
1997
- 1997-02-05 US US08/795,608 patent/US5808582A/en not_active Expired - Lifetime
- 1997-09-10 JP JP51381298A patent/JP3983812B2/en not_active Expired - Lifetime
- 1997-09-10 BR BRPI9712042-1A patent/BR9712042B1/en not_active IP Right Cessation
- 1997-09-10 CA CA002265720A patent/CA2265720C/en not_active Expired - Lifetime
- 1997-09-10 WO PCT/US1997/015997 patent/WO1998011451A1/en active Application Filing
- 1997-09-10 EP EP97942416A patent/EP0925514B1/en not_active Expired - Lifetime
- 1997-09-12 AR ARP970104197A patent/AR009778A1/en unknown
-
1998
- 1998-04-14 US US09/060,399 patent/US6259401B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
AR009778A1 (en) | 2000-05-03 |
EP0925514A4 (en) | 2001-01-31 |
WO1998011451A1 (en) | 1998-03-19 |
EP0925514A1 (en) | 1999-06-30 |
US6259401B1 (en) | 2001-07-10 |
BR9712042A (en) | 2001-09-04 |
JP2001501305A (en) | 2001-01-30 |
JP3983812B2 (en) | 2007-09-26 |
CA2265720C (en) | 2005-02-01 |
BR9712042B1 (en) | 2011-09-06 |
EP0925514B1 (en) | 2011-04-06 |
US5808582A (en) | 1998-09-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20170911 |
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MKEX | Expiry |
Effective date: 20170911 |